Refrigerator



FIG. 1 is a perspective view of a refrigerator showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a perspective view thereof showing the state that the doors of the refrigerator are closed;

FIG. 9 is a perspective view thereof showing the state that the first door at the right side and the door at the left side of top of the refrigerator are opened; and,

FIG. 10 is a perspective view thereof showing the state that the first and the second door at the right side and the door at the left side of top of the refrigerator are opened.

The broken lines depict portions of the refrigerator that form no part of the claimed design. 

The ornamental design for a refrigerator, as shown and described. 